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Security Bulletin: GSKit Sweet32 Birthday attacks on 64-bit block ciphers in TLS affects the Tivoli Storage Manager (IBM Spectrum Protect) Server (CVE-2016-2183)

Security Bulletin


GSKit is vulnerable to Sweet32 Birthday attacks on 64-bit block ciphers in TLS which affects the Tivoli Storage Manager (IBM Spectrum Protect) Server.

Vulnerability Details

CVEID: CVE-2016-2183
An error in the DES/3DES cipher, used as a part of the SSL/TLS protocol, could allow a remote attacker to obtain sensitive information. By capturing large amounts of encrypted traffic between the SSL/TLS server and the client, a remote attacker able to conduct a man-in-the-middle attack could exploit this vulnerability to recover the plaintext data and obtain sensitive information. This vulnerability is known as the SWEET32 Birthday attack.
CVSS Base Score: 3.7
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

This vulnerability affects the following IBM Tivoli Storage Manager (IBM Spectrum Protect) Server levels:

  • All 8.1 levels below 8.1.1
  • through
  • through
  • 6.2, 6.1, and 5.5 all levels (these releases are EOS)


Tivoli Storage Manager Server Release Fixing

Link to Fix / Fix Availability Target
8.1 AIX
7.1 AIX
6.3 AIX
6.2 and below Customers on these releases can upgrade the server to a fixed level (, or Contact IBM Support if you have any questions.

Workarounds and Mitigations


Get Notified about Future Security Bulletins


Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

1 May 2017 - Original version published

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Cross reference information
Segment Product Component Platform Version Edition
Storage Management IBM Spectrum Protect Server AIX, HP-UX, Linux, Solaris, Windows 7.1, 8.1 All Editions

Document information

More support for: Tivoli Storage Manager

Software version: 5.5, 6.1, 6.2, 6.3, 7.1

Operating system(s): AIX, HP-UX, Linux, Solaris, Windows

Software edition: All Editions

Reference #: 2002021

Modified date: 01 May 2017

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